<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<head>
    <title>登录页面</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
        }

        .container {
            max-width: 400px;
            margin: 0 auto;
            padding: 20px;
            background-color: #fff;
            border-radius: 5px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }

        .container h2 {
            text-align: center;
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
        }

        .form-group input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 3px;
        }

        .form-group button {
            width: 100%;
            padding: 10px;
            background-color: #4CAF50;
            color: #fff;
            border: none;
            border-radius: 3px;
            cursor: pointer;
        }
    </style>
</head>
<body>
<div class="container">
    <h2>登录</h2>
    <form>
        <div class="form-group">
            <label for="username">用户名:</label>
            <input type="text" id="username" placeholder="请输入用户名">
        </div>
        <div class="form-group">
            <label for="password">密码:</label>
            <input type="password" id="password" placeholder="请输入密码">
        </div>
        <div class="form-group">
            <button type="submit">登录</button>
        </div>
    </form>
</div>
</body>
</html>

<!--测试-->